(?????????)???“B??????”:?????

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??1???21????????(????????????????????????????? ???? ????????????)“???50mm/s,??????3°?????????5°,?????????????2-5N?????……”1??21???????,?????????,????????????,??,???????????????????,?????????????

?????????????????“??????????”,??“??”??“?????????????”?????????????????????????“??”????,???“???????”“???????????”“????????????????????????”“??????”“?”???????“????”?,???????????????,???

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????????????????????????“90??”,?????????“?????”10?????“?????”,??,??????????“B??”,??????????????????????????

9?????,???????,????????????,?????????,??????????,??,??????,???“??????”?????????????????,????????

?????,???????????????,?????????,???????????“???”????????????“??????????????”?

“??????,???????,????,???????????,?,????????,????????????????????????????????,?????????????,???”??

????????????,???????????????10000????,???????????“??????????????”,???????????????????“????”?

?,??16??????????????,????134?,??465??????????

??“?????????0.5???????”????????

??????,??????????,?250????????????,??60???????????????????,?????????????????????????100%?(?)

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